Quiz 5
Is it easier to breathe in through mouth or nose in speech breathing any why
Mouth - less resistance
At 7 years old are lung volumes smaller or larger than older kids
Larger
Location of air intake in speech breathing
Mouth
What does pitch correlate to
Frequency
What does loudness correlate to
intensity, amplitude, sound pressure level
What is the VC % for conversational speech
typically 20 VC%
Why do seven year olds use larger lung volumes
Talk louder, increased resistance of vocal tract due to smaller size
Frequency of breathing in speech breathing
Varies on utterance length
What is period
Time it takes to complete one cycle of vibration
Speech waveform axis
horizontal = time, vertical = amplitude
aspects of babies respiratory system
Rib cage not rigid, lung recoil- nearly as strong as adult
Does overall lung size decrease with age
Yes
inspiratory muscle activity in quiet breathing
Diaphragm and external intercostals
Combinations of sine waves of different frequencies and amplitude and phases?
Complex wave
Most sound sources produce vibrations that are?
complex
Where do we see the biggest effect of myelination
Brain
Location of air intake for quiet breathing
Nose
Expiration muscle activity in speech breathing
Abdominal muscles and internal intercostals
no obvious repeated pattern – perceived as noise
Aperiodic waveform
If two waveforms are completely out of phase, they will
Produce silence
Do infants phonate on inspiration or expiration
Expiration
Inspiratory/Expiratory ratio in quiet breathing
1:1 ratio
Expiration muscle activity in quiet speech
No muscle activity- passive expiration
What breaks down a complex wave into its sine waves?
Fourier Analysis
Signal to Noise Ratio
Relative intensity of the signal compared with the background noise